Coupling for threshing-rigs and other purposes.



T. STOA COUPLING FOR THRESHING RIGS AND OTHER PURPOSES.

APPLICATION TILED DELLZG, 1908.

. Patented; July 27, 1999.

(HIM v M a Md 5 UNlTEE @TATES PATENT QFFICE. THEODORE STOA, or LA eELLTroihvsnrr, Mrhshitr. C Ou-NTYyson'rH DAKOTA.

COUPLING FOR IHRESHING-RIGS AND OTHER PURPOSES.

, Patented Jirly 27, 1909.

Specification of Letters Patent; hpplicetionfiied December 26, M08. Serial No. 169,276.

To all whom it may crincern:

Be it known that I, THEODORE E. S'roA, a citizen of theUnited States residing at La Bell township, in the county of Marshall and State of tain new and useful Improvements in Couplers for ThreshingRigs and other Purposes; and I do hereby declare the following to be a full, clear, and exactdescription cf theinven tion, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has for its ob'ect to provide an improved coupler especially adapted for use in connection with traction engines and threshing rigs.

Tothe above ends, the invention consists of the novel devices and combinations of (levices hereinafter described and defined in the claim.

In the accompanying drawings which illus trate the invention, like characters indicate like parts throughout the several views.

Referring to the drawings: Figure 1 is a View chiefly in plan but with some parts broken away and with some parts in horizontal section, illustrating my improved coupler; Fig. 2 is a side elevation. of the parts shown inFig. 1; and Fig. 3 is a plan view showing the coupler and cooperating couplin r member separated.

'lhe numerals 1 and 2 indicate draft bars, the former of which we may assume is, in practice, to be suitably secured either to the traction en ine or to its tender, and that the draft bar 2 is the ole of a threshing machine. The coupler head as shown, is made "up of a pair of vertically spaced horizontal metal plates 3, the ends of which are rigidly-but detachablv connected to the draft bar 1 by nutted bolts 4, one of which is shown as provided with an eye 4" at its lower end. An approximately C-shaped coupling hook or knuckle 5 is intermediately ivoted by a bolt 6 to cars 7 of coupler head p ates 3. The opening movement of this knuckle is limited by the engagement of a shoulder 8 thereof,

.2. retaining bolt 15, which with a pin 9 passed through and secured to the plates 3. At its long end, the knuckle-5 has a lock shoulder 10 that is engaged by the hooked end 1] of a lock lever 12, that is intermediatcly pivoted to the coupler head plates 3, by a bolt 13. The

lock hook 13 is normally held in operative position, by a spring 14, shown as applied to atone end, is piv- South Dakota, have invented cer-- traction engine.

notc es or channels 21 adapted to be as provided with the hand piece 18. The 1 short inner arm of the bell crank lever 16 is connected, by a short link 19, to the inner.

end of thelock lever 12. By forward movement of the rojecting end ofthe bell crank lever 16, the lbck hook .11 may be moved into an inoperative position. and caused to release the knuckle 5, against the tension of the spring .14. Opposite to the ears 7, the

coupler plates 3 are provided with beveled or cam acting centering lugs 20, so that centering notches-21 are formed in the forward edges of the and 20.

Vertically spaced horizontal metal straps or bars 22 are rigidly secured to the end of the draft bar or ole 2, by ineans of nutted bolts 23, .one of w 'ch is provided at its lower end with an eye 23*. The numeral 24 indicates a chain, by means of which, the eyes 4 and 23 are adapted to be connected. It will usually happen thatthe bars 1 and 2 will stand at an angle to each other as shown in Fig. 3, when a threshing machine, for instance, is to be connected to an engine tender or an engine tender is-to be connected to the At such a time, the eyes 4 and 23 may be connected withthe chain 24 so that when the engine is moved forward,

ment an plates 3 between the said lugs 5 the two (liars l and 2 will be drawn into aline- I up, the coupling bolt 25 in the ends of the stra s 22, will be directed intothe centerin of the coupling hea plates By reference to Fig. 2, it will'be noted that the straps 22 are spaced much hencewhen the engine is then backed fartherapart than are the plates 3, so that T the latter may freely enter between the same. When the knuckl'eS issetin its open position as shown in Fig. 3, and its short inner arm is forced against the coupling bolt 25 by backing u of the engine or tender, the said knuckle w' sition and will be locked by the spring pressed lock hook 11. and course, then, be coupled together. The device is uncoupled by forward movement of the lever. 16, which throws the lock hook 11 into its inoperative position as'ab ove stated. In practice, the coupler head made up of be forced intoits closed po-' the two draft bars will,-of

the lates 3, will, in some instances, be direct y secured to the transverse beam of the engine or tender frame instead of to the end of a draft bar, as shown in the drawings.-

The knuckle 5, as shown in Fig. 3,is farther open than it would be in actual ractice.

- The entire device is extreme y simple and of small cost, and at the same time, 1t is ef-' ficient for the purposes had in view. The coupler ma of course, be applied inconnection wit various kinds of draft riggings, and may be used in connection with cars.

-What I claim is:

In a can let, the combination with a coupler head liaving vertically spaced metal plates formed with centering notches at their front ends, of an approximately ,C, sha ed knuckle intermediately ivoted to saidiplates at one side of sai centering notches, a lock hook intermediately pivoted to said plates at" the other side of said centering notches and engageable at its outer end with the free end of the outer arm of said knuckle to lock the same, a retaining 7 bolt ivoted to said plates and loosely working t ough the inner arm of said lock book,

a coiled spring carried by said retaining bolt for yieldlngly holding said lock hook in adefinite position, a bell crank lever pivoted and said lever, substantially as described.

1plates, and-a link connecting said In testimony whereof I afllx my signature in presence of two witnesses.

THEODORE E. STOA. "Witnesses:

' C. E. CASTLE,

H. J. PFEIFFER. 

